2009-2014 Cadillac CTS-V Performance Mods Discussion, new plugs in Cadillac CTS-V Series Forum - 2009-2014; I'm probably going to be putting headers on my coupe to hook up to my cat back system I already ...

new plugs

I'm probably going to be putting headers on my coupe to hook up to my cat back system I already put on. I also have 2.55 upper, cai, id850 injectors and a tune.
Anyone recommend TR6 or TR7 plugs? Should I lean toward one over the other? What are the differences?

Re: new plugs

I believe that most guys are running TR7s or TR7ix. Some are using BR7EF but its a retracted tip plug that makes sense if spraying nos. I'd run TR7's gapped at .030. I believe the number is BP7EFS & 3526.